From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Fri, 22 Nov 2013 15:47:27 +0000 (+0100)
Subject: TTY: amiserial, add missing platform check
X-Git-Tag: v4.9.8~7297^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3dcf344bef2e9b9910817b210783d79c383bc849;p=platform%2Fkernel%2Flinux-rpi3.git

TTY: amiserial, add missing platform check

When booting a multi-platform m68k kernel on a non-Amiga with
"console=ttyS0" on the kernel command line, it crashes with:

Unable to handle kernel access at virtual address 81dff01c
Oops: 00000000
PC: [<001e09a8>] serial_console_write+0xc/0x70

Add the missing platform check to amiserial_console_init() to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 2b86f8e..71630a2 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1855,6 +1855,9 @@ static struct console sercons = {
  */
 static int __init amiserial_console_init(void)
 {
+	if (!MACH_IS_AMIGA)
+		return -ENODEV;
+
 	register_console(&sercons);
 	return 0;
 }